matplotlib上下翻转图片

要在Matplotlib中上下翻转图片，可以使用`plt.imshow()`函数，并设置`origin='lower'`参数。下面是一个示例代码：

import matplotlib.pyplot as plt
import numpy as np

# 创建一个随机的二维数组作为示例图片
image = np.random.rand(10, 10)

# 绘制图片并设置origin参数为'lower'
plt.imshow(image, origin='lower')

# 显示图片
plt.show()

这样就可以在Matplotlib中上下翻转图片了。
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